1. Mechanical Ventilation in Children on Venovenous ECMO.
- Author
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Friedman, Matthew L., Barbaro, Ryan P., Bembea, Melania M., Bridges, Brian C., Chima, Ranjit S., Kilbaugh, Todd J., Pandiyan, Poornima, Potera, Renee M., Rosner, Elizabeth A., Sandhu, Hitesh S., Slaven, James E., Tarquinio, Keiko M., and Cheifetz, Ira M.
- Subjects
ADULT respiratory distress syndrome treatment ,MORTALITY risk factors ,ACADEMIC medical centers ,REACTIVE oxygen species ,ARTIFICIAL respiration ,CHI-squared test ,CONFIDENCE intervals ,EXTRACORPOREAL membrane oxygenation ,LONGITUDINAL method ,LUNG injuries ,EVALUATION of medical care ,MEDICAL cooperation ,OXYGEN ,OXYGEN in the body ,PEDIATRICS ,PROBABILITY theory ,RESEARCH ,RESEARCH funding ,STATISTICS ,SURVIVAL analysis (Biometry) ,MECHANICAL ventilators ,LOGISTIC regression analysis ,DATA analysis ,PROPORTIONAL hazards models ,RETROSPECTIVE studies ,DATA analysis software ,DESCRIPTIVE statistics ,ODDS ratio - Abstract
BACKGROUND: Venovenous extracorporeal membrane oxygenation (VV-ECMO) is used when mechanical ventilation can no longer support oxygenation or ventilation, or if the risk of ventilator- induced lung injury is considered excessive. The optimum mechanical ventilation strategy once on ECMO is unknown. We sought to describe the practice of mechanical ventilation in children on VV-ECMO and to determine whether mechanical ventilation practices are associated with clinical outcomes. METHODS: We conducted a multicenter retrospective cohort study in 10 pediatric academic centers in the United States. Children age 14 d through 18 y on VV-ECMO from 2011 to 2016 were included. Exclusion criteria were preexisting chronic respiratory failure, primary diagnosis of asthma, cyanotic heart disease, or ECMO as a bridge to lung transplant. RESULTS: Conventional mechanical ventilation was used in about 75% of children on VV-ECMO; the remaining subjects were managed with a variety of approaches. With the exception of PEEP, there was large variation in ventilator settings. Ventilator mode and pressure settings were not associated with survival. Mean ventilator F
IO on days 1–3 was higher in nonsurvivors than in survivors (0.5 vs 0.4, P = .009). In univariate analysis, other risk factors for mortality were female gender, higher Pediatric Risk Estimate Score for Children Using Extracorporeal Respiratory Support (Ped-RESCUERS), diagnosis of cancer or stem cell transplant, and number of days intubated prior to initiation of ECMO (all P < .05). In multivariate analysis, ventilator F2 IO was significantly associated with mortality (odds ratio 1.38 for each 0.1 increase in F2 IO , 95% CI 1.09-1.75). Mortality was higher in subjects on high ventilator F2 IO (≥ 0.5) compared to low ventilator F2 IO (> 0.5) (46% vs 22%, P = .001). CONCLUSIONS: Ventilator mode and some settings vary in practice. The only ventilator setting associated with mortality was F2 IO , even after adjustment for disease severity. Ventilator F2 IO is a modifiable setting that may contribute to mortality in children on VV-ECMO. [ABSTRACT FROM AUTHOR]2 - Published
- 2020
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